Insist on yourself; never imitate.
- Ralph Waldo Emerson
Steal not from thy fellow magician. I never get as many compliments as when I can honestly tell people that a particular move or a complete effect is my own creation. If the best you can do is lie about stealing someone else's magic effect, patter or move, then you can't be a very good magician.
It's important to continually develop your own style. After all, which would you be more proud of, being a unique magician or being a copy of a unique magician?